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Can I change UART on U-BOOT??

k.s shin
Expert 2115 points

Hello

I have 6636 custom board, and I want to change UART number On U-boot for debugging. but I cannot find to set UART number in U-BOOT source code.

Can I get a solution changing UART number??

Thank you.

Regards.

  • 0
    TI__Guru* 81335 points

    Hi,

    In EVM, the UART0 will be used by default for console/debugging message.  

    Please find those definition in below file,

    File Name: include/configs/ks2_evm.h

    /* UART Configuration */

#define CONFIG_SYS_NS16550

#define CONFIG_SYS_NS16550_SERIAL

#define CONFIG_SYS_NS16550_REG_SIZE -4

#define CONFIG_SYS_NS16550_COM1 KS2_UART0_BASE

#define CONFIG_SYS_NS16550_COM2 KS2_UART1_BASE

#define CONFIG_SYS_NS16550_CLK clk_get_rate(KS2_CLK1_6)

#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }

#define CONFIG_CONS_INDEX 1

#define CONFIG_BAUDRATE 115200

    Please change the index value to 2 for UART1.

    Thank you.

  • 0 in reply to Raja
    Expert 2115 points
    Thank you very much.
    Merry Christmas.
  • 0 in reply to k.s shin
    TI__Guru* 81335 points

    Hi,
    We wish you the same and Happy new year 2015. Thank you.